p/Al），Ni-Co-P鍍層修飾碳纖維增強(qiáng)7075鋁基復(fù)合材料（CF/Al）和FeCoCrNiAl高熵合金顆粒及Ni-Co-P鍍層修飾碳纖維混雜增強(qiáng)鋁基復(fù)合材料（CF-HEAp/Al）。并對不同復(fù)合材料微觀結(jié)構(gòu)及拉伸性能進(jìn)行分析表征及比較。結(jié)果表明：CF-HEAp/Al復(fù)合材料的屈服強(qiáng)度（YS）與極限拉伸強(qiáng)度（UTS）隨纖維含量的升高（體積分?jǐn)?shù)由0至40%）呈現(xiàn)先增大后降低的變化，延伸率則逐漸降低。鑒于Ni-Co-P鍍層修飾碳纖維與FeCoNiCrAl高熵合金顆粒的混雜強(qiáng)化效應(yīng)， CF-HEAp/Al復(fù)合材料的YS和UTS較HEAp/Al與CF/Al復(fù)合材料明顯提高，且其斷口表現(xiàn)出基體韌性斷裂及纖維拔出與斷裂的多種失效特征。"/>

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碳纖維-FeCoCrNiAl高熵合金顆?；祀s增強(qiáng)7075鋁基復(fù)合材料的力學(xué)性能及斷裂行為
作者:
作者單位:

1.蘭州理工大學(xué) 材料科學(xué)與工程學(xué)院，甘肅 蘭州 730050;2.蘭州理工大學(xué) 省部共建有色金屬先進(jìn)加工與再利用國家重點(diǎn)實(shí)驗(yàn)室，甘肅 蘭州 730050;3.泉州信息工程學(xué)院 機(jī)械與電氣工程學(xué)院，福建 泉州 362000

作者簡介:

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中圖分類號:

基金項(xiàng)目:

國家自然科學(xué)基金項(xiàng)目（地區(qū)基金）；甘肅省教育廳創(chuàng)新基金


Mechanical Properties and Failure Behavior of 7075Al Matrix Composites Hybrid Reinforced by Carbon Fibers-FeCoCrNiAl High-Entropy Alloy Particles
Author:
Affiliation:

1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China;2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;3.School of Mechanical and Electronic Engineering, Quanzhou University of Information Engineering, Quanzhou 362000, China

Fund Project:

National Natural Science Foundation of China (52262012); Innovation Fund Project of Gansu Provincial Department of Education (2021A-030)

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    摘要:

    為探究雙相增強(qiáng)體對鋁基復(fù)合材料拉伸性能和斷裂行為的影響，采用真空熱壓燒結(jié)工藝在580 ℃，30 MPa條件下保溫10 min制備了FeCoCrNiAl高熵合金顆粒增強(qiáng)7075鋁基復(fù)合材料（HEAp/Al），Ni-Co-P鍍層修飾碳纖維增強(qiáng)7075鋁基復(fù)合材料（CF/Al）和FeCoCrNiAl高熵合金顆粒及Ni-Co-P鍍層修飾碳纖維混雜增強(qiáng)鋁基復(fù)合材料（CF-HEAp/Al）。并對不同復(fù)合材料微觀結(jié)構(gòu)及拉伸性能進(jìn)行分析表征及比較。結(jié)果表明：CF-HEAp/Al復(fù)合材料的屈服強(qiáng)度（YS）與極限拉伸強(qiáng)度（UTS）隨纖維含量的升高（體積分?jǐn)?shù)由0至40%）呈現(xiàn)先增大后降低的變化，延伸率則逐漸降低。鑒于Ni-Co-P鍍層修飾碳纖維與FeCoNiCrAl高熵合金顆粒的混雜強(qiáng)化效應(yīng)， CF-HEAp/Al復(fù)合材料的YS和UTS較HEAp/Al與CF/Al復(fù)合材料明顯提高，且其斷口表現(xiàn)出基體韌性斷裂及纖維拔出與斷裂的多種失效特征。

    Abstract:

    To investigate the effects of double-scaled reinforcements on the tensile properties and failure behavior of aluminium matrix composites, Ni-Co-P coated carbon fibers reinforced 7075Al matrix composites (CF/Al), FeCoCrNiAl high-entropy alloy particles reinforced 7075Al matrix composites (HEAp/Al) and Ni-Co-P coated carbon fibers and FeCoCrNiAl high-entropy alloy particles hybrid reinforced 7075Al matrix composites (CF-HEAp/Al) were fabricated by vacuum hot pressing sintering under the pressure of 30 MPa at 580 °C for 10 min. The microstructure and the fracture morphologies of the composites were observed, and the tensile properties of composites were characterized. Results show that the yield strength (YS) and ultimate tensile strength (UTS) of CF-HEAp/Al composites are firstly increased and subsequently decreased with increasing the CFs content from 0vol% to 40vol%, while the elongation is decreased. Owing to the hybrid reinforcing effects of Ni-Co-P coated carbon fibers and FeCoCrNiAl high-entropy alloy particles, the YS and UTS of CF-HEAp/Al composites have larger improvement compared with those of CF/Al and HEAp/Al composites, and the fracture morphology is characterized by mixed rupture modes of ductile rupture of 7075Al matrix and fiber pull-out and fracture.

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高昌琦,馬勤,魏玉鵬,田江霞,魏明宇,王喬博,孫良玉.碳纖維-FeCoCrNiAl高熵合金顆粒混雜增強(qiáng)7075鋁基復(fù)合材料的力學(xué)性能及斷裂行為[J].稀有金屬材料與工程,2024,53(3):643~650.[Gao Changqi, Ma Qin, Wei Yupeng, Tian Jiangxia, Wei Mingyu, Wang Qiaobo, Sun Liangyu. Mechanical Properties and Failure Behavior of 7075Al Matrix Composites Hybrid Reinforced by Carbon Fibers-FeCoCrNiAl High-Entropy Alloy Particles[J]. Rare Metal Materials and Engineering,2024,53(3):643~650.]
DOI：10.12442/j. issn.1002-185X.20230278

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  • 收稿日期:2023-05-10
  • 最后修改日期:2023-08-15
  • 錄用日期:2023-08-24
  • 在線發(fā)布日期: 2024-03-22
  • 出版日期: 2024-03-20